== sanity test 413k: QoS mkdir exclude prefixes ========== 20:08:39 (1788566919)
lmv.lustre-clilmv-ffff8d6645c32800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8d6645c32800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8d6645c32800.qos_exclude_prefixes=_temporary